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公开(公告)号：US20170282248A1
公开(公告)日：2017-10-05
申请号：US15630154
申请日：2017-06-22
Applicant: Arcam AB
Inventor： Ulric Ljungblad , Martin Wildheim
CPC classification number: B22F3/1055 , B22F5/00 , B22F7/02 , B22F2003/1056 , B29C64/153 , B29C64/20 , B29C64/386 , B33Y10/00 , Y02P10/295
Abstract: An apparatus for forming a three-dimensional article is provided, comprising means for providing a predetermined amount of powder, a powder distributor, means for directing an energy beam over a first powder layer causing it fuse in selected locations according to a model, a camera for capturing at least one image of a shape of at least one portion of the predetermined amount of powder that has yet to be initially distributed, the at least one image being captured prior to distribution of an entirety of all portions of the predetermined amount of powder over the surface, and means for comparing at least one value of at least one parameter in the image detected with a corresponding reference parameter value, wherein the at least one parameter is associated with the shape of the powder that has yet to be initially distributed.
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公开(公告)号：US10406599B2
公开(公告)日：2019-09-10
申请号：US15630154
申请日：2017-06-22
Applicant: Arcam AB
Inventor： Ulric Ljungblad , Martin Wildheim
IPC: B22F3/105 , B22F7/02 , B29C67/00 , B22F5/00 , B29C64/153 , B29C64/20 , B29C64/386 , B33Y10/00
Abstract: An apparatus for forming a three-dimensional article is provided, comprising means for providing a predetermined amount of powder, a powder distributor, means for directing an energy beam over a first powder layer causing it fuse in selected locations according to a model, a camera for capturing at least one image of a shape of at least one portion of the predetermined amount of powder that has yet to be initially distributed, the at least one image being captured prior to distribution of an entirety of all portions of the predetermined amount of powder over the surface, and means for comparing at least one value of at least one parameter in the image detected with a corresponding reference parameter value, wherein the at least one parameter is associated with the shape of the powder that has yet to be initially distributed.
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公开(公告)号：US09718129B2
公开(公告)日：2017-08-01
申请号：US14443015
申请日：2013-11-18
Applicant: Arcam AB
Inventor： Ulric Ljungblad , Martin Wildheim
CPC classification number: B22F3/1055 , B22F5/00 , B22F7/02 , B22F2003/1056 , B29C64/153 , B29C64/20 , B29C64/386 , B29C67/0077 , B29C67/0085 , B29C67/0088 , B33Y10/00 , Y02P10/295
Abstract: A method for forming a three-dimensional article, said method comprising the steps of: providing a predetermined amount of powder for forming a first powder layer on a start plate, distributing said predetermined amount of powder with a powder distributor for forming said first powder layer, directing an energy beam over said start plate causing said first powder layer to fuse in selected locations according to a model to form a first cross section of said three-dimensional article. At least one image of the powder to be distributed is captured with a camera at least one time during said distribution of said powder on said start plate for forming said first powder layer and at least one value of at least one parameter in said image detected with said camera is compared with a reference parameter value.
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Patent Agency Ranking
公开(公告)号：US20160129501A1
公开(公告)日：2016-05-12
申请号：US14877428
申请日：2015-10-07
Applicant: Arcam AB
Inventor： Lars Loewgren , Martin Wildheim
IPC: B22F3/105
CPC classification number: B22F3/1055 , B22F2003/1057 , B29C64/153 , B33Y10/00 , B33Y50/02 , Y02P10/295
Abstract: Various embodiments of the present invention relate to a method for forming at a three-dimensional article through successively depositing individual layers of powder material that are fused together with at least one energy beam so as to form the article, said method comprising the steps of generating a model of said three-dimensional article; applying a first powder layer on a work table; directing said at least one energy beam from at least one energy beam source over said work table causing said first powder layer to fuse in first selected locations according to said model to form a first cross section of said three-dimensional article; introducing a predetermined pattern laterally separated from said first cross section for reducing thickness variations in a powder layer provided on top of said first cross section.
Abstract translation: 本发明的各种实施例涉及一种用于通过连续地沉积与至少一个能量束熔合在一起以形成物品的粉末材料的各个层而形成三维制品的方法，所述方法包括以下步骤：产生 所述三维物品的模型; 将第一粉末层施加在工作台上; 将来自至少一个能量束源的所述至少一个能量束引导到所述工作台上，使所述第一粉末层根据所述模型在第一选定位置融合，以形成所述三维制品的第一横截面; 引入与所述第一横截面横向分离的预定图案，用于减小设置在所述第一横截面顶部上的粉末层中的厚度变化。
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公开(公告)号：US11806800B2
公开(公告)日：2023-11-07
申请号：US17018439
申请日：2020-09-11
Applicant: Arcam AB
Inventor： Johan Backlund , Martin Wildheim
IPC: B23K15/00 , G01T1/29 , B29C64/153 , B33Y50/00 , H01J37/305 , B29C64/20 , B22F10/28 , B22F12/90 , B22F10/31 , B22F12/52 , B22F12/55 , B22F10/32 , B22F10/36 , B33Y10/00 , B33Y50/02 , H01J37/30
CPC classification number: B23K15/0013 , B22F10/28 , B22F10/31 , B22F12/90 , B23K15/002 , B23K15/0086 , B29C64/153 , B29C64/20 , B33Y50/00 , G01T1/29 , H01J37/305 , B22F10/32 , B22F10/36 , B22F12/52 , B22F12/55 , B33Y10/00 , B33Y50/02 , H01J37/3002 , H01J2237/2445 , H01J2237/30433 , H01J2237/30472 , Y02P10/25
Abstract: A standard reference plate is configured for insertion into an additive manufacturing apparatus for calibrating an electron beam of the additive manufacturing apparatus. The standard reference plate includes a lower plate and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate including a plurality of holes. A predetermined hollow pattern is provided inside the holes, and a spacing between the holes and the size of the holes and a distance between the upper plate and the lower plate and a position of an x-ray sensor of the additive manufacturing apparatus with respect to the standard reference plate are arranged so that x-rays emanating from the lower plate, when the electron beam is passing through a hollow part of the hollow pattern, will not pass directly from the lower plate through any one of the holes to the x-ray sensor.
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公开(公告)号：US10807187B2
公开(公告)日：2020-10-20
申请号：US15245542
申请日：2016-08-24
Applicant: Arcam AB
Inventor： Johan Backlund , Martin Wildheim
IPC: B23K15/00 , G01T1/29 , B29C64/20 , B29C64/153 , B33Y50/00 , H01J37/305 , B22F3/105 , B33Y10/00 , B33Y40/00 , B33Y50/02 , H01J37/30
Abstract: An X-ray standard reference object for calibrating a scanning electron beam in an additive manufacturing apparatus by measuring X-ray signals generated by scanning the electron beam onto the reference object, the reference object comprises: a lower and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate comprises a plurality of holes, wherein a predetermined hollow pattern is provided inside the holes.
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公开(公告)号：US20170087661A1
公开(公告)日：2017-03-30
申请号：US15245542
申请日：2016-08-24
Applicant: Arcam AB
Inventor： Johan Backlund , Martin Wildheim
Abstract: An X-ray standard reference object for calibrating a scanning electron beam in an additive manufacturing apparatus by measuring X-ray signals generated by scanning the electron beam onto the reference object, the reference object comprises: a lower and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate comprises a plurality of holes, wherein a predetermined hollow pattern is provided inside the holes.
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公开(公告)号：US20150283610A1
公开(公告)日：2015-10-08
申请号：US14443015
申请日：2013-11-18
Applicant: ARCAM AB
Inventor： Ulric Ljungblad , Martin Wildheim
CPC classification number: B22F3/1055 , B22F5/00 , B22F7/02 , B22F2003/1056 , B29C64/153 , B29C64/20 , B29C64/386 , B29C67/0077 , B29C67/0085 , B29C67/0088 , B33Y10/00 , Y02P10/295
Abstract: A method for forming a three-dimensional article, said method comprising the steps of: providing a predetermined amount of powder for forming a first powder layer on a start plate, distributing said predetermined amount of powder with a powder distributor for forming said first powder layer, directing an energy beam over said start plate causing said first powder layer to fuse in selected locations according to a model to form a first cross section of said three-dimensional article. At least one image of the powder to be distributed is captured with a camera at least one time during said distribution of said powder on said start plate for forming said first powder layer and at least one value of at least one parameter in said image detected with said camera is compared with a reference parameter value.
Abstract translation: 一种形成三维制品的方法，所述方法包括以下步骤：提供预定量的用于在起始板上形成第一粉末层的粉末，用用于形成所述第一粉末层的粉末分配器分配所述预定量的粉末 将能量束引导到所述起始板上，使得所述第一粉末层根据模型在选定位置熔合以形成所述三维制品的第一横截面。 在所述粉末分布在所述起始板上的至少一次时间期间，用相机拍摄要分配的粉末的至少一个图像，以形成所述第一粉末层，并且用所述第一粉末层中的至少一个参数值检测所述图像中的至少一个值 所述相机与参考参数值进行比较。
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